Home / 28,729.29-43,057.43-12,917.43

Finding the Fourth Proportional to 28,729.29, 43,057.43 and 12,917.43

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Solution

The fourth proportional to 28,729.29, 43,057.43 and 12,917.43 is: 19,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.29 : 43,057.43 = 12,917.43 : x
  2. Step 2: Convert to fraction form
    28,729.29/43,057.43 = 12,917.43/x
  3. Step 3: Cross multiply
    28,729.29x = 43,057.43 × 12,917.43
  4. Step 4: Simplify right side
    28,729.29x = 556,191,273.42
  5. Step 5: Solve for x
    x = 556,191,273.42/28,729.29
  6. Step 6: Final answer
    x = 19,359.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.